A Survey of Press Coverage of Unidentified Flying Objects, 1947 â€“ 1966; Strentz, Herbert J., Dissertation submitted to the Graduate School of the Northwestern University, Evanston, Illinois, in partial fulfillment of the requirements for the degree, Doctorate of Philosophy, June 1970, p.p. 242

Reagan, Ronald; a note on the extraterrestrial quotation. My colleague Ron Regehr learned through Reagan speechwriter Peter Robinson that the extraterrestrial references included in a number of President Reaganâ€™s speeches were personally inserted by him and not the product of his speechwriters. They are penciled in in the President's handwriting and archived at the Reagan Presidential Library in Simi Valley, California.

Robertson, Pat, comments from July 8, 1997 broadcast of the Christian Broadcasting Networkâ€™s, The 700 Club, and excerpts from their response to Peter Robbinsâ€™ letter of August 30, 1997